50-Ton Rooftop Unit Replacement and Building-Wide HVAC Partnership Challenges & Needs A multi-tenant, three-story commercial building in the West 1604 area required a new HVAC vendor after experiencing ongoing performance concerns with an aging rooftop unit. The primary system serving the south zone of the building was a 50-ton Carrier rooftop unit that […]
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More than 1,2k satisfied customer
our story.
A legacy that can't be beat
Since 1988, Shafer Mechanical has been one of the most-trusted names in plumbing and mechanical HVAC. Building on a rich family history in San Antonio that dates back to 1884, the company has become a leader in the development and maintenance of the city’s public and private infrastructure.
Throughout our journey, the Shafer Family has proudly contributed to the growth of San Antonio by installing plumbing, mechanical, and HVAC systems for many of the city’s most iconic buildings, such as the Hilton Palacio del Rio, Majestic Theatre, Commerce Plaza, and the Metropolitan General Hospital, now known as the Methodist Metropolitan Hospital. Additionally, we have played an integral role in the construction of the Milam Building and the Tower of the Americas.
what we do.
One of the most trusted names in texas
Commercial HVAC Service & Maintenance
Equipment Retrofit Projects
Commercial Plumbing Service & Maintenance
Commercial Boilers & Pumps
We turn your ideas to reality. We don't stop until you're satisfied.
how we work.
Why Choose Shafer Mechanical?

24-HOUR EMERGENCY SERVICE

EQUIPMENT REPLACEMENTS OR RETROFITTING

BUILDING AUTOMATION & CONTROLS

EQUIPMENT INSPECTIONS & EVALUATION

MECHANICAL SYSTEM OPERATING COST ANALYSIS

FULL SERVICE/REPAIR AND MAINTENANCE ON ALL BRANDS OF EQUIPMENT

MECHANICAL SYSTEM PERFORMANCE EVALUATION & ANALYSIS
Identify and Simplify
We take responsibility for our role in the community and are committed to our policy of both corporate social and environmental responsibility.
Build and Develop
All our clients share is the trust they put in us to manage and deliver construction projects of the highest quality.
Scale and Deploy
From concept and building design to project and construction management, our multi-skilled team provides innovative, forward-thinking solutions.
Completion
Focusing on medium to large-scale commercial construction projects, we work with both investors and developers to create landmarks that make an impact.
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featured projects.
WORK SPOTLIGHT
why choose us.
core values
Safety
We will never compromise the safety of our people. Our goal is zero incidents and our lost time frequency rate is industry leading.
Quality
Consistency ensures success. We see projects through and proactively develop solutions to exceed expectations.
Sustainability
We look beyond sustainable construction to corporate social responsibility that addresses partners, projects, and places.
Stewardship
Our culture of giving empowers employees to give back to the community.
from our blog.
news & resources
Proactive building maintenance protects your investment, keeps systems running efficiently, and ensures comfort and safety for everyone in your home or building. Waiting for problems to appear often leads to costly repairs, downtime, and stress. A planned maintenance program addresses these challenges head-on. Here are 10 essential benefits to consider in 2026. Prevent Costly Breakdowns […]
In any commercial building, the ductwork plays a key role in maintaining comfort, air quality, and energy efficiency. Over time, however, ducts can develop leaks, blockages, or general wear and tear that impact performance. Learning how to identify potential issues in advance will equip you to make informed decisions on duct repair and/or replacements that […]


